Make transition to 1.0 easier

[aseyboldt]

Tell us about your idea

Right now it is hard to write a library that depends on arviz and is compatible with both pre 1.0 and 1.0.
But I think with a few very small changes this could be made much easier:

If there was a arviz.InferenceData = xr.DataTree, typing hints for instance still work.
Similarly, there could be an alias arviz.plot_trace = arviz.plot_trace_dist.
I think those two would already help a lot, and I think a lot of code would just continue to work.

This should help transition of the whole ecosystem. Otherwise we can end up in strange situations where different libraries have to switch over at exactly the same time, and need very strict version requirements (nutpie and pymc for instance).

Thoughts on implementation

No response

References

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